INTSO EDUCATION SCIENCE TALENT SEARCH OLYMPIAD (STSO) Classes : III & IV Max. Marks : 50. Instructions : Ø Ø Ø

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1 Instructions : INTSO EDUCATION SCIENCE TALENT SEARCH OLYMPIAD (STSO) Level-II : Primary Time : 60 Min Classes : III & IV Max. Marks : 50 Fill the OMR sheet completely and carefully. Please leave space after initials in your name. Each question carries one mark and has only one correct answer. The question paper contains 50 questions to be answered in 60 minutes. 1. Observe the following [ ] i) Mosquito ii) Fish iii) Plants iv) Insects 1) Plants do not breath 2) All of them breath 3) Insects do not breath 4) Fish does not breath 2. Plants make food for themselves. But food made by one of the following plants is not enough for it. So it catches and eats insects. Identify the plant [ ] 1) 2) 3) 4) 3. New plants come from eyes of potato. The potato you eat is [ ] 1) Root 2) Leaf 3) Stem 4) Fruit 4. Process by which plants prepare food by themselves is [ ] 1) Excretion 2) Respiration 3) Nutrition 4) Photosynthesis 5. Statement - I : Clouds can move and grow [ ] Statement - II : So clouds are living 1) Statements I & II are correct 2) Statement I is correct statement II is wrong 3) Statement I is wrong Statement II is correct 4) Statement I and II are wrong 6. The sunflower bud turns to face the sun. It shows that [ ] 1) Plants have sense organs to feel changes around them 2) Non living things will not feel cold 3) Living things produce young ones 4) Living things feel changes around them 7. Nose, gills, airholes and stomata are special body parts to help in breathing. They are found respectively in [ ] 1) Man, prawn, Grass hoper, cockroach 2) Cow, prawn, grass hoper, cockroach 3) Dog, fish, cockroach and plant 4) Snake, fish prawn and plant intso.in 1

2 8. Which one is right answer? [ ] 1) Snakes reproduce by laying and hatching eggs 2) Fishes move with legs 3) New plants of onion come from leaves 4) Dog cannot smell its food 9. Organisms eating both plants and animals are called [ ] 1) Herbivores 2) Carnivores 3) Detritivores 4) Omnivores 10. Every food chain starts with [ ] 1) Consumers 2) De composers 3) Producers 4) Saprobes 11. A) B) C) Herbivore is [ ] 1) A 2) B 3) C 4) B & C 12. Which animals shoot out toungue to catch insects? [ ] I) Lizards II) Frogs III) Chameleon IV) Snake 1) IV, II 2) II, III 3) III, IV 4) I, IV 13. One type of animals have small teeth. They do not chew their food but swallow animals bigger than their own body. They [ ] 1) Crawl by using their body 2) Fly by using wings 3) Walk by using legs 4) Move in water by using bins 14. Identify the omnivores [ ] I) Man II) Cheetah III) Bear IV) Crow 1) I only 2) I & III 3) I, II, III 4) II, IV 15. Animals which do not have teeth [ ] 1) Frogs & rats 2) Snakes & Lizards 3) Lions & Tigers 4) Turtles and tortorises 16. Sharp and broad front teeth are present in [ ] 1) Grazing animals 2) Chewing animals 3) Meat eating animals 4) Swallowing animals 17. Talons are [ ] 1) Sharp and hard claws of roosters and hens 2) Webbed feet of ducks and goos 3) Long thin legs of cranes and flamingoes 4) Sharp, curved claws of Eagles and hawks 18. For tearing up the fish some birds have [ ] 1) Sharp printed beak 2) Strong, sharp, hooked beaks 3) Broad, flat beak 4) Strong curved beak 19. Feathers of birds which keep them warm are [ ] 1) Down feathers 2) Flight feathers 3) Body feathers 4) Body feathers and down feathers 20. In money plant [ ] 1) Stem is fleshy and stores food 2) Stem is thick, soft and green 3) Stem is weak and need a support to climb up 4) Stem is hard and strong intso.in 2

3 21. Bird which cannot fly [ ] 1) Crow 2) Sparrow 3) Parrot 4) Ostrich 22. Fibrous roots are present in [ ] 1) Mustard 2) Bean 3) Balsam 4) Grass 23. Weather conditions are caused due to [ ] 1) changes in the sky colour 2) changes in the nature of the soil 3) changes in the air around us 4) changes in the humanbeings around us 24. Among the following the applications of evaporation [ ] 1) formation of water vapour in the air 2) coming of water vapours from boilled water 3) observation of water droplets on cooler parts of ice cube box 4) both 1 & The process of changing water into water vapour is called [ ] 1) evaporatation 2) condensation 3) precipitation 4) sedimentation 26. Among the following the applications of condensation process are [ ] 1) formation of water droplets on grass (or) coolpot 2) formation of water vapour in the air 3) formation of water droplets on cooler parts of vessels 4) both 1, The process of changing water vapour in the air into water droplets is called [ ] 1) evaporation 2) condensation 3) precipitation 4) sedimentation 28. Most of the water on the earth is evaporated due to [ ] 1) boiling by human beings 2) sun heat 3) forest fire 4) heat released by vehicles 29. The freezing of water inside the cloud takes place at [ ] 1) near to ground 2) near to rivers 3) when clouds rise to very height places 4) all 30. The process of falling of water drops from the clouds is called [ ] 1) freezing 2) evaporation 3) precipitation 4) crystallisation 31. Summer season is followed by season [ ] 1) rainy 2) winter 3) spring 4) all 32. In winter the duration of nights are [ ] 1) longer 2) shorter 3) medium 4) very shorter 33. In India monsoon winds are produced due to [ ] 1) boiling by human beings 2) heat released by vehicles 3) transfer of heat from land to sea everyday 4) heating of the land due to sun heat during summer 34. The condition of air around is called [ ] 1) atmosphere 2) lithosphere 3) weather 4) Ionosphere 35. At 0º Celsius temperature the following process will takes place [ ] i) ice formation ii) freezing of water iii) snow formation iv) boiling of water 1) only i 2) only i & ii 3) only i, ii & iii 4) all intso.in 3

4 36. Dew formation takes place at [ ] 1) on the rivers 2) on seas 3) any object present on the ground like grass 4) inside the clouds 37. When the water droplets condenses on the dust particles in the air then _ formation takes place 1) dew 2) fog 3) snow 4) clouds [ ] 38. In which of the following levers fulcrum is in the middle [ ] 1) 2) 3) 4) None of these 39. Choose the incorrect statement [ ] 1) A complex machine is made up of a number of simple machines 2) A crow bar is an example of lever of first type 3) Wheel - barrow is an example of lever of third type 4) Wedge is used to split wood 40. Mechanical advantage of a simple machine is [ ] 1) effort load 2) load effort 3) load arm effort arm 4) load effort 41. Which of the following is an example of lever of second order [ ] 1) Pair of scissors 2) Nut cracker 3) Ice tongs 4) Road going up a hill 42. Which one of the following describes a pulley? [ ] 1) Rigid bar free to turn about a fixed point 2) A plank at an angle to the ground 3) A nail with threads 4) A wheel with a groove around which passes a string 43. Principle of inclined plane [ ] 1) is used to lift heavy objects 2) the lesser the inclination of the plane, the lesser the force 3) can be used to cut through wood 4) all the above 44. For a third order lever, the mechanical advantage can not be [ ] 1) Greater than one 2) Less than one 3) Equal to one 4) both 1 and First class lever among the following [ ] 1) 2) 3) 4) 46. A pair of pliers is an example of [ ] 1) Class I lever 2) Class II lever 3) Class III lever 4) None of these intso.in 4

5 47. The ability to do work is [ ] 1) Energy 2) Power 3) Capacity 4) Force 48. Choose the correct statement among the following [ ] 1) gear is toothed wheel 2) screw works on basing principle of inclined plane 3) screw jack works on the principle of wheel and axle 4) all the above 49. It is easier to [ ] 1) jump from ground to reach first floor of the building 2) walk along the inclined stair case to reach the first floor of the building 3) climb up along the walls to reach the first floor of the building 4) none of these 50. A single fixed pulley is used to [ ] 1) Gain force 2) Change the direction of force 3) Gain time 4) Any of these depending on how it is used Z intso.in 5